690252206492 has 6 divisors (see below), whose sum is σ = 1207941361368. Its totient is φ = 345126103244.

The previous prime is 690252206491. The next prime is 690252206521. The reversal of 690252206492 is 294602252096.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690252206491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86281525808 + ... + 86281525815.

It is an arithmetic number, because the mean of its divisors is an integer number (201323560228).

Almost surely, 2^690252206492 is an apocalyptic number.

It is an amenable number.

690252206492 is a deficient number, since it is larger than the sum of its proper divisors (517689154876).

690252206492 is a wasteful number, since it uses less digits than its factorization.

690252206492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172563051627 (or 172563051625 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 47.

The spelling of 690252206492 in words is "six hundred ninety billion, two hundred fifty-two million, two hundred six thousand, four hundred ninety-two".